1. Motorcycle Cylinder Heads & Valve Covers For Sale
  2. sku: 14294266140989772
  3. MAXPEEDINGRODS YA28U0

MAXPEEDINGRODS YA28U0 Cylinder Head Kit Performance 70CC 50CC

fits model: Xr70, Ct70, C70, Crf. make: Honda. year: 1970.

Ya28u0 Maxpeedingrods Cylinder Head Complete Kit For Honda Crf 70 Xr70 Ct70 C70 70cc 50cc Performance

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: YA28U0 ), ( Bundle Listing: Yes ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Compatible Make: For Honda ), ( Compatible Model: Atc70 Crf70 Ct70 C70 Trx70 Xr70 S65 ), ( Country Of Origin: China ), ( Engine: 50cc, 70cc ), ( Engine Type: 4-stroke ), ( Exhaust Valve Outside Diameter: 20mm ), ( Fit 1: For Honda 50cc Large Bore ), ( Fit 2: For Honda 70cc Small Bore Cylinder ), ( Fit For: For Domed 50cc Or Flat Top 70cc ), ( Including: Cylinder Head ), ( Inner Bore Size: 39mm ), ( Intake Valve Outside Diameter: 23mm ), ( Items Included: Gasket ), ( Length: 66mm ), ( Machine Type: Off-road Motorcycle, Street Motorcycle ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Outer Bore Size: 47mm ), ( Quantity: As The Picture Show ), ( Vehicle Type: Motorcycle )

Review MAXPEEDINGRODS Cylinder Head Complete Kit Honda 50cc Performance fits XR70 CT70 C70 CRF 1970

The Maxpeedingrods YA28U0 Cylinder Head Kit is an excellent upgrade option for Honda CRF 70, XR70, CT70, and C70 models with 70cc and 50cc engines. This performance cylinder head kit is designed to enhance the power output and overall riding experience of your Honda dirt bike.

The YA28U0 kit includes a high-performance cylinder head, which features an increased compression ratio of 11.5:1, compared to the standard 9.2:1 ratio. This higher compression ratio allows more fuel to be burned efficiently in each combustion cycle, resulting in increased power and torque.

The cylinder head also comes with large 35mm intake ports and 30mm exhaust ports. These larger ports improve the flow of air and exhaust gases in and out of the engine, resulting in better engine breathing and more power.

The kit also includes a high-performance camshaft, which provides improved valve lift and duration. This results in better engine performance, with increased power and improved throttle response.

The cylinder head is made from high-quality aluminum alloy, ensuring lightweight and durability. The kit also includes a new set of head gaskets, which ensure a proper seal between the cylinder head and engine block.

Additionally, the YA28U0 kit includes a high-performance exhaust valve and a performance exhaust system connector. The exhaust valve is designed to improve exhaust flow and reduce back pressure, while the performance exhaust system connector ensures a proper fit and seal between the cylinder head and exhaust system.

Installing the Maxpeedingrods YA28U0 Cylinder Head Kit requires some mechanical knowledge and experience, as it involves removing the old cylinder head and installing the new one. However, the kit includes detailed instructions and all necessary hardware to make the installation process as straightforward as possible.

In summary, the Maxpeedingrods YA28U0 Cylinder Head Kit is an excellent upgrade option for Honda CRF 70, XR70, CT70, and C70 models with 70cc and 50cc engines. With its high-performance cylinder head, large intake and exhaust ports, high-performance camshaft, and other performance-enhancing components, this kit provides increased power and torque, improved throttle response, and better engine breathing for an enhanced riding experience.

The Maximum Motorsports (MM) Ya28U0 cylinder head kit is a popular aftermarket upgrade for Honda CRF 70, XR70, CT70, C70, and 70cc/50cc engines. This kit aims to improve engine performance by providing a high-performance cylinder head. Here are some pros and cons to help you make an informed decision:

Pros:

1. Increased power: The Ya28U0 cylinder head kit is designed to enhance engine performance by increasing power output. This can lead to better acceleration and top speed.

2. Improved cooling: The kit comes with a larger cooling fin design, which improves cooling efficiency. This is crucial for maintaining optimal engine temperature and preventing engine damage.

3. Enhanced durability: The Ya28U0 cylinder head kit is made from high-quality materials, ensuring durability and reliability. This can save you money in the long run by reducing the need for frequent repairs or replacements.

4. Better fuel economy: The improved engine performance can lead to better fuel economy, resulting in fewer fuel stops and lower operating costs.

Cons:

1. Cost: The Ya28U0 cylinder head kit can be quite expensive, which may deter some buyers.

2. Complex installation: Installing the kit requires a certain level of mechanical expertise and may take a significant amount of time. It is recommended that the installation be carried out by a professional to ensure proper installation and optimal performance.

3. Potential compatibility issues: There have been reports of compatibility issues with certain aftermarket parts or modifications. It is important to ensure that the kit is compatible with any aftermarket components you may have installed.

Conclusion:

The Maximum Motorsports Ya28U0 cylinder head kit is an excellent upgrade for those seeking improved performance, cooling efficiency, and durability for their Honda CRF 70, XR70, CT70, C70, or 70cc/50cc engine. However, the high cost and complex installation process may be a deterrent for some buyers. If you have the necessary expertise and budget, this kit can provide significant performance gains and long-term savings.

Recommendation:

If you are considering purchasing the Maximum Motorsports Ya28U0 cylinder head kit, ensure that you have a solid understanding of the installation process and the tools required. It is also recommended that you consult with a professional mechanic to assess the compatibility with any aftermarket components you may have installed. Additionally, consider the potential savings in fuel economy and long-term durability when weighing the cost of the kit. Ultimately, if you are looking for significant performance gains and are willing to invest the time and money, the Ya28U0 cylinder head kit is a worthwhile investment.

Details:

MaXpeedingrods always follow the development concept that Success derives from devotion and happiness comes sharing to make contributes domestic overseas car tuning enthusiasts global racing culture by excellent products service. MaXpeedingrods has a longstanding commitment to the research of ECU, engine, gearbox and vehicle performance electronic calibration. We established cooperation's with EM tron, Mote, LINK, Cartel, Him, etc. PRODUCTS Cylinder Head Complete Kit For Honda CRF 70 XR70 CT70 C70 70cc 50cc Performance.

This head will only work with DOMED pistons. For Honda TRX70. Cylinder Head for Honda CRF70 XR70 CT70 C70 ATC70 TRX70 S65 50cc Large Bore / 70cc Small. Compare the Combustion Chamber Size shown below, to your current head.

This head will only work with FLAT TOP pistons. For Honda S65.

part #: ya28u0 price

  • $34.05

specifications cylindermotorcycleiz:

  • for models: Xr70, Ct70, C70, Crf
  • for makes: Honda
  • for years: 1970
  • brand: Maxpeedingrods
  • mpn: Ya28u0
  • bundle listing: Yes
  • california prop 65 warning: California Prop 65 Warning
  • compatible make: For Honda
  • compatible model: Atc70 Crf70 Ct70 C70 Trx70 Xr70 S65
  • country of origin: China
  • engine: 50cc, 70cc
  • engine type: 4-stroke
  • exhaust valve outside diameter: 20mm
  • fit 1: For Honda 50cc Large Bore
  • fit 2: For Honda 70cc Small Bore Cylinder
  • fit for: For Domed 50cc Or Flat Top 70cc
  • including: Cylinder Head
  • inner bore size: 39mm
  • intake valve outside diameter: 23mm
  • items included: Gasket
  • length: 66mm
  • machine type: Off-road Motorcycle, Street Motorcycle
  • note: No Instruction Included
  • notice: This Is Aftermarket Replcement Part.
  • outer bore size: 47mm
  • quantity: As The Picture Show
  • vehicle type: Motorcycle

seller cylindermotorcycleiz:

  • city: Elk Grove Village, Illinois
  • # reviews: 47228
  • rating: 99.7%

offer cylindermotorcycleiz:

  • started: May 14, 2026
  • options: Ship-to-home
  • best offers: True
  • sold: 0
  • availability: In Stock

payments cylindermotorcycleiz:

  • other
  • credit card: Visa
  • wallet: Apple-pay

shipping cylindermotorcycleiz:

  • service: FedEx Ground / FedEx Home Delivery
  • carrier: FedEx
  • cost: $0.00
  • class: Standard
  • type: Fixed
  • transit: 2-5 Days

general cylindermotorcycleiz:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads
  • condition: New

returns cylindermotorcycleiz:

  • policy: Returns Accepted
  • paid by: Seller
  • time: 30 Days
for models: xr70, ct70, c70, crf, for makes: honda, for years: 1970, bundle listing: yes, california prop 65 warning: california prop 65 warning, compatible make: for honda, compatible model: atc70 crf70 ct70 c70 trx70 xr70 s65, country of origin: china, engine: 50cc, 70cc, engine type: 4-stroke, exhaust valve outside diameter: 20mm, fit 1: for honda 50cc large bore, fit 2: for honda 70cc small bore cylinder, fit for: for domed 50cc or flat top 70cc, including: cylinder head, inner bore size: 39mm, intake valve outside diameter: 23mm, items included: gasket, length: 66mm, machine type: off-road motorcycle, street motorcycle, note: no instruction included, notice: this is aftermarket replcement part., outer bore size: 47mm, quantity: as the picture show, vehicle type: motorcycle,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > cylinder heads, sku: 14294266140989772,
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1 offer $34.05 USD
  • New. Offer #1 priced at $34.05 + $0.00 shipping estimate = $34.05* total. This head can be used on either a 50cc or 70cc engine. Cylinder Head for Honda CRF70 XR70 CT70 C70 ATC70 TRX70 S65 ( 50cc Large Bore / 70cc Small Bore ).FREE SHIPPING

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